Hello everyone,
I need help with my watches Garmin Forerunner 255 Music. Since version 25.04 the watch cannot be used at all during GPS activity. Sooner or later it turns off, after a while a blue triangle appears and then the paused activity is shown. If I continue the activity, it is recorded for a while but then it happens again.
However, it's not just a problem during activity. You can't even play music from the watch because it restarts after a while. This also happens during sleep. Below I am posting the log from this morning. In the sleep overview, you can see a missing sleep record at the time that corresponds to the log.
I've tried everything from deleting the file in the remote_sw folder, restarting the watch, to a complete factory reset. The error always appears again. I really don't know what to do anymore. The watch is already out of warranty. I would appreciate any advice.
err_log.bak:
[{ "unit_id": "3474899606", "product_name": "Forerunner 255 Music", "software_part_number": "006-B3990-00", "ms_since_epoch": "1758513249000", "system_version": "25.04", "build_type": "Production", "backtrace": "0x10001795\n\t0x1000ae93\n\t0x1000a195\n\t0x1000a195\n\t0x100e3bb7\n\t0x100e3ba9\n\t0x100096b1\n\t0x00000000\n\t0x00000000\n\t0x00000000\n\t0x00000000\n\t0x00000000\n\t0x00000000\n\t0x00000000\n\t0x00000000\n\t0x00000000\n\t0x00000000\n\t0x00000000\n\t0x00000000\n\t0x00000000\n\t0x00000000\n\t0x00000000\n\t0x00000000\n\t0x00000000\n\t0x00000000\n\t0x00000000\n\t0x00000000\n\t0x00000000\n\t0x00000000\n\t0x00000000\n\t0x00000000\n\t0x00000000\n\t", "error_cause": "RTL Trap", "proprietary_info": { "Commit ID": "792c5879f7061ea87589380ae90e0baa596a59b0", "Time": "2025-9-22 3:54:09", "uptime": "10384796", "pageStackDepth": "1", "pageStack": "1857", "RTL Error Number": "0x05c", "rtl_reg": "r[0]: 0x38a1de40\n\tr[1]: 0x38a1ddb0\n\tr[2]: 0x1000a195\n\t", "programCounter": "0x10001835", "stackPointer": "0x38a1dd48" }}]
